| 29 Jan 2025 |
 laurynasp | What i can share is that my aim is to have as automated setup as i can, hence I am using nixos to run ha in declarative way, and for that reason i picked raspbery pi 4B because it is most compatible. (I am using 8GB rather than 4GB but that is an orthoganal matter).
However, for my journal of automated/scripted/decalrative setup of ha, I have been rather disappoitned, because I was not able to find an easy way to automated onboarding, but that is home-assitant's issue, not nixos modules issue. Still, ha module on nixos on pi 4B is the best i was able discover so far.
| 13:57:58 |
| laurynasp | * What i can share is that my aim is to have as automated setup as i can, hence I am using nixos to run ha in declarative way, and for that reason i picked raspbery pi 4B because it is most compatible with nixos. (I am using 8GB rather than 4GB but that is an orthoganal matter).
However, for my journal of automated/scripted/decalrative setup of ha, I have been rather disappoitned, because I was not able to find an easy way to automated onboarding, but that is home-assitant's issue, not nixos modules issue. Still, ha module on nixos on pi 4B is the best i was able discover so far.
| 13:58:28 |
| laurynasp | * What i can share is that my aim is to have as automated setup as i can, hence I am using nixos to run ha in declarative way, and for that reason i picked raspbery pi 4B because it is most compatible with nixos. (I am using 8GB rather than 4GB but that is an orthoganal matter).
However, for my aim of automated/scripted/declarative setup of ha, I have been rather disappoitned, because I was not able to find an easy way to automated onboarding, but that is home-assitant's issue, not nixos modules issue. Still, ha module on nixos on pi 4B is the best i was able discover so far.
| 13:58:49 |
 @hexa:lossy.network | 4 vs 8 GB does matter, if you want the rpi to evaluate and rebuild itself | 14:00:23 |
| laurynasp | * What i can share is that my aim is to have as automated setup as i can, hence I am using nixos to run ha in declarative way, and for that reason i picked raspbery pi 4B because it is most compatible with nixos. (I am using 8GB rather than 4GB but that is an orthoganal matter).
However, for my aim of automated/scripted/declarative setup of ha, I have been rather disappoitned, because I was not able to find an easy way to automated onboarding, but that is home-assitant's issue, not nixos modules issue. Still, ha module on nixos on pi 4B is the best i was able discover so far.
My guess is that most ppl workaround to "redeployment" of the configs state is via restoring backups
| 14:00:25 |
| @hexa:lossy.network | * 4 vs 8 GB does matter, if you want the rpi to evaluate and rebuild itself … aka do automatic upgrades | 14:00:42 |
| laurynasp | Good point! Hexa, if deploymetns are build remotely, i.e.g by running nixos-rebuild --target-host user@$NIXOS_INSTALL_TARGET_IP switch --flake .#ha-rpi --use-remote-sudo on my main machine, would 4GB still be an issue? | 14:03:08 |
| @hexa:lossy.network | probably not | 14:03:26 |
| @hexa:lossy.network | but remember that you need an arm64 builder for that, or do cross builds exclusively | 14:03:46 |
| laurynasp | aha, yet another thing that I forgot to document in my setup - ta | 14:04:33 |
 kdn | right... I forgot that I wanted to set up mac mini for that... | 14:15:08 |
| kdn | would cross-compilation from x86 to rpi4 be significantly longer (I've quite beefy desktop), do you have any materials on how to do that? | 14:16:07 |
| @hexa:lossy.network | I haven't | 14:16:56 |
| laurynasp | Do you mean "x86_64-linux" or 32-bit system?
My main machine is "x86_64-linux", and on this machine I had add boot.binfmt.emulatedSystems = [ "aarch64-linux" ]; to the config in order to be able to cross-compile for raspberry pi.
In terms of time, first time might take a while (depending on your config could be 10min or whatever), but redeploymetns usually take seconds to a minute, as long as changes don't require the whole univers to be rebuilt.
If it interests you, let me know, and I can share more details
| 15:15:06 |
| @hexa:lossy.network | that is not cross, that is emulation | 15:15:27 |
| laurynasp | oh... okay | 15:15:42 |
| laurynasp | whats the difference? | 15:15:53 |
| @hexa:lossy.network | emulation passes native instructions through qemu | 15:16:14 |
| @hexa:lossy.network | cross instructs the compiler to compile for another target | 15:16:25 |
| @hexa:lossy.network | https://wiki.nixos.org/wiki/Cross_Compiling | 15:16:39 |
